Question

module: nervous
topic: structures / type: combination

what structure is highlighted?

a. stria vascularis
b. spiral ganglion
c. cochlear duct
d. scala vestibuli
e. spiral organ

Explanation:

Identify the histological section

Using the Cochlea Histology knowledge point
The image shows a cross-section of the bony cochlea of the inner ear, displaying its spiral turns containing the cochlear duct (scala media), scala vestibuli, and scala tympani.

Analyze the highlighted structure

Using the Cochlea Histology knowledge point
The green highlighted regions are located on the outer lateral wall of the cochlear duct (scala media). This specialized, highly vascularized stratified epithelium is the stria vascularis, which is responsible for producing endolymph.

Answer:

• A. Stria vascularis (Correct answer)
• B. Spiral ganglion
• C. Cochlear duct
• D. Scala vestibuli
• E. Spiral organ